Universal Licensing System
WQZS543
Contra Costa Transportation Authority
License details
| ULS identifier | 3941496 |
|---|
| Call sign | WQZS543 |
|---|
| Radio service | IQ |
|---|
| Status | A |
|---|
| Grant date | 2017-07-21 |
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| Expiration | 2027-07-21 |
|---|
| Frequency range | 5885 - 5925 MHz (5 frequencies) |
|---|
| Locations | 1 |
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| Representative location | San Ramon, CA |
|---|
| Coordinates | 37.7769444, -121.9597500 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:18:11 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB | 5885.00000000 | 5895.00000000 | | 23.000000 | | |
| 0 | 1 | | 5895.00000000 | 5925.00000000 | | | | |
| 1 | 1 | FB | 5895.00000000 | 5905.00000000 | | 20.000000 | | |
| 1 | 1 | FB | 5895.00000000 | 5915.00000000 | | 20.000000 | | |
| 1 | 1 | FB | 5905.00000000 | 5915.00000000 | | 20.000000 | | |
| 1 | 1 | FB | 5915.00000000 | 5925.00000000 | | 20.000000 | | |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 0 | L | CONTRA COSTA, CA | | | | | |
| 1 | T | San Ramon, CA | 37.77694444, -121.95975000 | 137.800 m | POLE | 3.900 m structure / 3.900 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 0 | | | | | | | | |
| 1 | 1 | T | Lear Omni DSRC | | | 5.0000 | 106.3000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-02-18 | WQZS543 | COR |
| 2024-04-19 | WQZS543 | COR |
| 2024-04-19 | WQZS543 | LIMOD |
| 2022-07-21 | WQZS543 | LIMOD |
| 2021-09-09 | WQZS543 | LIAUA |
| 2017-07-21 | WQZS543 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 3941496 | 2026-08-02 01:18:11 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQZS543 | ULS 3941496 | 2026-08-02 01:18:11 |
| Status | A | ULS 3941496 | 2026-08-02 01:18:11 |
| Service | IQ | ULS 3941496 | 2026-08-02 01:18:11 |
| Grant Date | 2017-07-21 | ULS 3941496 | 2026-08-02 01:18:11 |
| Expiration Date | 2027-07-21 | ULS 3941496 | 2026-08-02 01:18:11 |